Table 1 Datasets for training, validation, testing, prospective pilot study, and Characteristics of patients.
Characteristics | A retrospective dataset (images) | An external retrospective validation set (videos) | A prospective dataset (volunteers) | ||
|---|---|---|---|---|---|
Training set | Validation set | Test set | |||
Number of patients | 6081 | 2023 | 632 | 184 | 242 |
Final diagnosis N (%) | |||||
NON | 0 (0.0) | 0 (0.0) | 0 (0.0) | 28 (15.2) | 43 (17.7) |
NSI | 5584 (91.8) | 1880 (92.9) | 551 (87.2) | 137 (74.5) | 178 (73.6) |
SIP | 497 (8.2) | 143 (7.1) | 81 (12.8) | 19 (10.3) | 21 (8.7) |
Number of labeled images | 9750 | 3249 | 1086 | ||
Labeled ultrasound image categories N (%) * | |||||
NSD | 7628 (78.2) | 2678 (82.4) | 820 (75.5) | ||
NSS | 1297 (13.3) | 336 (10.3) | 146 (13.4) | ||
SSI | 825 (8.5) | 235 (7.2) | 120 (11.0) | ||
Patients’ characteristics | |||||
Age Median age (range) | |||||
Month | 8 (3–36) | 8 (3–36) | 9 (3–36) | 8 (3–36) | 9 (3–36) |
Sex N (%) | |||||
Male | 3899 (64.1) | 1317 (65.1) | 412 (65.2) | 112 (60.9) | 151 (62.4) |
Female | 2182 (35.9) | 706 (34.9) | 220 (34.8) | 72 (39.1) | 91 (37.6) |
Patients’ clinical symptoms N (%) | |||||
Abdominal pain | 5304 (87.2) | 1689 (83.5) | 579 (91.6) | 156 (84.8) | 216 (89.3) |
Vomiting | 4975 (81.8) | 1551 (76.7) | 523 (82.7) | 132 (71.7) | 180 (74.4) |
Currant jelly stool | 2112 (34.7) | 738 (36.5) | 241 (38.1) | 74 (40.2) | 93 (38.4) |
Abdominal mass | 1693 (27.8) | 559 (27.6) | 156 (24.7) | 40 (21.7) | 55 (22.7) |
Rectal examination with blood | 1529 (25.1) | 452 (22.3) | 137 (21.7) | 38 (20.7) | 58 (24.0) |
Temperature >38.5° | 734 (12.1) | 221 (10.9) | 81 (12.8) | 14(7.6) | 22 (9.1) |
Irritability, paroxysmal crying | 3729 (61.3) | 1289 (63.7) | 361 (57.1) | 94 (51.1) | 132 (54.5) |
Drowsiness | 1021 (16.8) | 293 (14.5) | 87 (13.8) | 22 (12.0) | 34 (14.0) |
